Figure 13

Power when the log odds ratio θ=0 and N=150. Power for the three tests Qγ (solid line), BD (dot-dash), and \(Q_{{\chi }^{2}}\) (dash) plotted against τ, the square root of the random effect variance. Here all studies have the parameters: 150 subjects in each study with equal arms of 75 each (N=150 and q=1/2) and the log odds ratio θ=0.